I've never had a Tilley lantern before, in fact I've never even seen one in person before I bought one online. After a quick cleaning, replacing the usual seals it is now working great and runs for hours but I wanted to double check how the control valve is supposed to work: I have to open it all the way counter clockwise to get it to light. But if I leave it all the way counter clockwise it will go out in a few minutes. So I quickly figured out if I turn it back clockwise almost to the click that turns if off - then it runs for hours, holds pressure perfectly etc. My question, is this normal and how they should work? Again, I'm in the USA and have never even seen one before, there are not many around.